Snap-hook



(No Model.)

H. STRAW.

SNAP 1100K.

No. 275,537. Patented Apr. 10,1883.

. ATTORNEYS.

N. PEYERS. Plnkfumngnpiwr. wnxhmgton, D. C.

UNITED STATES PATENT OFFICE.

SNAP- SPECIFICATION forming part of Iuetters HOOK.

Patent No. 275,537, dated April 10, 1883.

Application inea october 16, 1882. (No model.)

To all whom fit may concern:

Be yit known that l', HENRY STRAW, of Guilford, in the county ofAPiscataquis and State of Maine, have invented a new and ImprovedSnap-Hook, ot' which the following is a full, clear, and exactdescription.

The object of my invention is to provide a new and improved snaphookwhich is so constructed that the bolt or plunger cannot be pushed backby the horse, and accidental opening of the snap is thus prevented.

The invention consists in a hook having a tubular shank, containing asliding bolt, having a stud which passes through an L-shaped slot in thetubular shank. A spring in the tubular shank has its ends iu grooves inthe inner end of the bolt and the base of the openingin the shank, whichspring presses the bolt outward and also turns it toward the transversearm of the slot, so that when the bolt is pushed outward itsv studpasses into the transverse arm ofthe slot, and thus locks the bolt inpositon.

Reference is to be had to the accompanying drawings, i'orming'part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure l is a longitudinal elevation of my improved snap-hook, partsbeing broken and other parts shown in section. Fig. 2is a plan view ofthe same. Fig. 3 shows the plunger or bolt in side view and plan view,part Qt' the former being broken out and shown in section.

The tubular shank A of' the snap-hook A is provided in its front sidewith a longitudinal slot, a, the upper end of which terminates in ashort rectangular slot, b. A screw or stud, B, is passed through thesaid slot into the bolt or plunger C, which is adapted to slidelongitudinally in the shank A', and which is pressed outward by a spiralspring, D, in the lower part of the recess or opening in the shank. Theinner end of the bolt or plunger C is provided with a transverse groove,d, and the base of the opening in the shank is also provided with atransverse groove, j'. The ends of the springD are so bent that they canbe passed into the said grooves with the spring in torsion, and willturn the bolt on its longiaperture in Vthe end of the hook the end ofthe said bolt will be held securely and the snap strengthened.

In place of an aperture, the end of the hook can be provided with arecess.

' claim as new and desire to secure by Letters Patent- 1. A snaphook,formed substantially as herein shown and described, provided with acylindrical hole and an L-shaped slot through the shell thereof, incombination with a bolt adapted to slide longitudinally and to partiallyrotate in said hole, said bolt being provided slide in said slot and tobe held by the shoulder formed by the L thereof when partially rotated,as and for the purpose specied.

2. In a snap-hook, the combination, with the tubular hook-shank A',having a slot, a b, in its shank, of the bolt C, the stud B, and thespring D, substantially as herein shown and described, and for thepurpose set forth.

3. In a snap hook, the combination, with the tubular hook-shank A',provided with an L-shaped slot, a. b, and having a groove, f, in thebase of its recess, ot' the bolt C, having a groove, d, in its innerend, the stud B, pass,- ing throughthe slot a bin the bolt, and thespring D, having its ends bent to lit into the grooves d and f,substantially as herein shown and described, and for the purpose setforth.

HENRY STRAW.

Witnesses:

DAVID R. STEAW, WALTER BENNETT.

automatically. As the bolt C passes into the with a stud adapted toproject through and Having thus fuliy described my invention, I i

